V6NetHandle: NET6-2600-C0A-10-1 OrgID: C07009640 Parent: NET6-2600-C00-1 NetName: INAP-MIA003-EQUIVALENT-IPV6-11401-139256 NetRange: 2600:C0A:10:: - 2600:C0A:1F:FFFF:FFFF:FFFF:FFFF:FFFF NetType: reassignment Comment: rirCallout v1.07, Tue Jun 26 10:33:02 -0400 2018 RegDate: 2018-06-26 Updated: 2018-06-26 Source: ARIN OrgID: C07009640 OrgName: Private Customer CanAllocate: Street: Private Residence City: Fort Lauderdale State/Prov: FL Country: US PostalCode: 33301 Comment: created by rirCallout v1.07 for NET6-2600-C00-1 RegDate: 2018-06-26 Updated: 2018-06-26 Source: ARIN
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.